Quiz 2 Flashcards
What is the single best indication for a DVT duplex exam is..
Acute unilateral edema
90% of pulmonary emboli originate where?
Lower extremity (femoral vein or calf)
List 7 of the risk factors for DVT.
- Obesity
- Previous DVT
- Surgery
- CHF
- Trauma
- Dehydration
- Cancer
The best plane for performing most of LE duplex is _________.
Transverse
Give 2 reason why transverse the best plane for LE.
- Demonstrates compressibility
2. Ability to scan multiple vessels
List 4 characteristics that are compatible with acute thrombis?
- Homogenous
- Distended vein
- Soft/Dark echo
- Partly compressible
List 4 characteristics that are compatible with chronic thrombus:
- Heterogenous
- Irregular walls
- Bright streaky echo
- Incompressible
What are 6 characteristics of normal LE venous Doppler.
- Patency
- Phasicity
- Spontaneity
- Non pulsatility
- Augmentation
- Competence
Orienting the screen in transverse: for the right lower extremity, the common femoral vein should be
To right of the artery
What approach is usually best for approximately the distal third of the thigh?
Anterior approach b/c it gives the best acoustic window using the quadriceps femoris
The mid-thigh femoral vein is usually (superficial/deep) to the superficial femoral artery.
Deep
What is the best patient position for venous imaging? Why?
- Semi fowlers b/c the legs are below the heart at 10-20 degrees.
- Pooling
At the popliteal space the vein is usually superficial or deep to the artery.
Superficial
The calf veins found near the fibula are:
Peroneal
The calf veins just deep to the Soleal septum are:
Posterior tibials
